Side Prefix
This prefix means "three".
What is tri?
An angle that is exactly 90 degrees.
What is a right angle?
All quadrilaterals have the same number of sides.
What is a circle?
This shape has three sides.
What is a triangle?
This prefix means "four".
What does quad mean?
An angle that is less than 90 degrees.
What is an acute angle?
A quadrilateral with 4 equal sides and 4 right angles.
What is a square?
These two quadrilaterals have four right angles.
What is a square and rectangle?
This shape has four sides.
What is a quadrilateral?
This prefix means "five".
What is penta?
An angle that is greater than 90 degrees.
What is an obtuse angle?
A quadrilateral with one pair of parallel sides and no right angles.
What is a trapezoid?
This quadrilateral can be a parallelogram, rectangle, and a rhombus.
What is a square?
This shape has five sides.
What is an pentagon?
This prefix means "six".
What is hexa?
An angle that is 180 degrees.
What is a straight line?
This quadrilateral has two pairs of parallel sides and no right angles and the opposite sides are the same length.
What is a parallelogram?
This word means four sides and four angles.
What is quadrilateral?
This shape has six sides.
What is a hexagon?
This prefix means "eight".
What is "octo"?
An angle that is 360 degrees.
What is a circle?
This quadrilateral has both pairs of opposite sides are parallel, four sides are the same length, opposite angles are the same, and no right angles.
What is a rhombus?
This word means opposite sides are the same length, both pairs of opposite sides are parallel, and opposite angles are the same size.
What is a parallelogram?
This shape has eight sides.
What is an octagon?